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  1. Canadian Electrical Forum
    I have a project that the customer is requiring us to have the enclosure meet NEMA 12 standards. The control transformer we selected is rated NEMA 3R. It is mounted to the side of the enclosure. Our panel shop is saying that due to C22.2 486-17 4.7.1, the transformer forces the panel to be...
    nema 12 nema 3r
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